This is the perfect desktop toy that impresses colleagues customers and friends. After sale: If you have any questions please contact us and we will try our best to provide you with a satisfactory solution. Manufacturered by JUMERY. Perpetual sports tabletop toys are perfect for your outer space theme office or interior. Size:22*10.5*25CMI am very passionate about science or show the laws of physics in science classes. A battery is required (not included).